Improvement in apparatus for condensing fumes from smelting-furnaces



s. w. mK & 6.R. AYRES.

Appratus NoJ53J73.

lillll ll'n for Condensing` Fumes from Smelting Furnaces Patented July21,1874. Y

UNITED STATES PATENT OFFICE.-

SOLOMON lV. KIRK AND GEORGE Ii. AYRES, OF PHILADELPHIA, PA.

IMPROVEMENT IN APPARATUS FOR CONDENSING FUMES FROM SMELTING-FURNACES.

Specification forming part of Letters Patent No. l 53,173, dated July2l, 1874; application filed December 16, 1873.

To all whom it may concern:

Be it known that we, SOLOMON W. KIRK and GEORGE R. AYREs, ofPhiladelphia, county of Philadelphia and State of Pennsylvania, haveinvented certain Improvements in Apparatus for Oondensing Fumes fromSmelting-Furnaces, of which the following is a specication:

Our invention relates to an improved appa` ratus for condensing thefumes from a furnace for smelting argentiferous or other ores bearingthe precious metals.

In the accompanying drawings is represented a central verticallongitudinal section of an apparatus embracing my improvements.

A is a smelting-furnaoe, and is connected by an arched flume, B, withthe condensingchamber O. Dis a division-wall, extending from the archedtop of the fiume B down across the condensing-chamber O, to within fromtwelve to eighteen inches of the bottom thereof. Throughthisdivision-wall B extends the hollow cylinder E, as shown, and to theinterior vsurface of that cylinder is attached, by air-tight joints, anarehiinedean screw, which is fastened to and revolves with the spindleF, which may be revolved by a band or belt traveling over pulley K. G Gare pipes by which water may be conveyed into the dome of thecondensing-chamber, and there discharged in small `jets or spray, theOuter ends ofthe pipes being enlarged and capped with perforated platesfor that purpose, thus aiding in the condensation of the fumes.

The oondensin g'chamber should always contain water enough to entirelysubmerge the spindle F, and an aperture, H, through the wall will serveto dra-w off the water to the proper level. 1 is a smoke-stack to conveyaway such smoke and gas as are designed to be discharged as refusemattei'. J is an airtight doorway for entering the chamber whennecessary.

Now, when the furnace is in operation the fumes from its stack bear OEmuch gold, silver, lead, &c., and are themselves discharged into thatportion ofthe chamber next the furnace,

ment, and in their passage the pressure between the two volumes ofwater, one in each compartment, aided by its cooling effect,precipitates all their metallic parts, and the refuse passes out throughstack I, as before stated.

The operation of the screw so incased in the hollow cylinder E serves tomaterially increase the draft from the furnace, the chamber O, as wellas the division-wall D above the water-line, being 4air-tight up to thestack I.

We are aware of the patents of Whe] pley and Storer, No. 41,251, datedJanuary l 2, 1864, and reissues of same, Nos. 4,897 and 4,898, dated May7, 1872, and of the patent of F. Formhal, No. 7 3,519, dated January2l,1868, and reissue of same, No. 3,043, dated July 21, 1868, the saidVVhelpley and Storers patent being for improvement in processes ofroasting, burning, and heating metallic ores and minerals, and that ofF. Formhal for an improved machine for collecting and condensingmetallic.

the spray-pipes GO, and the cylinder E, pro-l vided in its interior withan archimedean screw on spindle F, each of such parts con-` structed andall arranged substantially inthe manner and for the purpose describedand set forth.

SOLOMOBT 1V. KIRK. GEO. ll. AYRES.

Witnesses:

J. TrsoN, HIRAM KIRK.

